assertThat(UnsignedLongs.divide(0xfffffffffffffffeL, 2)).isEqualTo(0x7fffffffffffffffL);
    assertThat(UnsignedLongs.divide(0xfffffffffffffffeL, 5)).isEqualTo(3689348814741910322L);
  }

  public void testRemainder() {
    assertThat(UnsignedLongs.remainder(14, 5)).isEqualTo(4);
    assertThat(UnsignedLongs.remainder(0, 50)).isEqualTo(0);
    assertThat(UnsignedLongs.remainder(0xfffffffffffffffeL, 0xfffffffffffffffdL)).isEqualTo(1);